"Indeed Allah, Mighty and Exalted, created certain creatures from His light, and a mercy from His mercy for the sake of His Mercy. For these are the eye of Allah that sees, and His ear that hears, and His tongue that speaks to His creation by His permission, and the safeguards over what has descended from (His) justifications and warnings and proofs. And through them He wards off grievances, and through them He sends down mercy, and through them He enlivens the dead, and causes to die the living. And through them He afflicts His creation (with tribulations), and through them He judges cases among His creation."

I asked: May I be your ransom - Who are these?

He (as) replied: Al-Awsiyaa (the vice-regents).

[Source: Al-Tawheed by Sheikh Sadooq, Pg 167, H 24]

Note: Authentic Hadees as per the Sanad analysis.

The above hadees clearly indicates that the AhlulBait (as) are the medium between Allah (swt) and his creations and have the authority over the creations as proved from the other narrations below.

Narrated to us Muhammad bin Abdul-Jabbar, from Al-Baraqi, from Fazalat bin Ayub, from Abdullah bin Abi Yafoor who said, Abu Abdillah (as) said to me:

"O son of Abi Yafoor, Verily Allah, blessed and high is One and is Alone in his Oneness, unique/individual in His Amr (orders). He created the creation and then made them solely for that Amr (orders) and We are those, O son of Abi Yafoor. And we are the Proofs of Allah (swt) in his servents and His witness in his creations and His Trustees and His treasury over His knowledge and the callers towards His path and those who establish with it (his Amr). Who obeys Us, then he has obeyed Allah (swt)."

Abu Abdillah Imam Sadiq (as) said, "Surely Allah (swt) chose Us for himself and made us the elite ones (best) from His creation and His trustees upon his reveleations (Wahi) and treasure in his earth and place (location) of His secrets and the keepers of His knowledge. Then he gave us Al-Shifa'at (intercession). We are His ears that hear and His eyes that see and His speaking tongue by his permission. And His trustees upon what has been revealed from reasons, warnings and proofs."

A number of our people have narrated from Ahmad ibn Muhammad from al-Hajjal
from Tha‘laba from Zurara who has said the following.

"I heard abu Ja‘far and abu ‘Abd Allah (as) say, ‘Allah, the Most Holy,
the Most High has made the Holy Prophet in charge of the affairs of His
creatures to see how their obedience is. He then recited this verse of Holy
Quran, "... what the Messenger (of Allah) you, you must take (obey) and
what he prohibits you, you must desist from ..." (59:7)

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn
Sinan from Ishaq ibn ‘Ammar from abu ‘Abd Allah (as) who has said the
following.

"Allah, the Most Holy, the Most High, disciplined and educated His
Prophet to the level that He wanted and said, ‘O Muhammad, you certainly
possess a great degree of moral discipline and education.’ (64:4). Then He made
him the in charge of His religion and said, ". . . what the Messenger (of
Allah) would bring you, you must take (obey) and what he would prohibit you,
you must desist from. . ." (59:7) Allah, the Most Holy, the Most High,
declared the laws of inheritance and did not assign any part for the
grandfather. The Messenger of Allah assigned one sixth for him. Allah, the Most
Holy, the Most High, granted permission in the matter in His words as follows.
"This is our gift to you; you may grant it others or keep it without being
held responsible (38:39)"

Al-Husayn ibn Muhammad al-Asha'ari has narrated from Mu'alla ibn Muhammad from abu al-Fadl Abd Allah ibn Idris from Muhammad ibn Sinan who has said the following:

"Once I was in the presence of Abu Jafar the second Imam Mohammad Taqi (asws) and I mentioned the differences among the Shia."

The Imam said, "O Muhammad, Allah, the Most Holy, the Most High, is One and eternal. He created Muhammad (saww), Ali (as) and Fatimah (sa). They were there for a thousand Dahr (one Dahr equals the amount of time from beginning to present of earth’s existence). Then He created all other things. He made them witness the creation of all other things. He made obedience to them obligatory and gave them control of the affairs of the creation. They can, thus, make lawful whatever they wish and unlawful whatever they wish and they never wish anything unless Allah, the Most Holy, the Most High, wishes."

The Imam (as) then said, "O Muhammad (the narrator), this is a religion that any one who goes ahead of it will deviate and the one who falls behind it will be destroyed. Those holding to it properly will have proper contact. Keep it with you, O Muhammad (the narrator)."

Imam Sadiq (as) said that Ameerul Momineen Ali b. Abi Talib (as) said, "I swear by Allah (swt) that Allah (swt) has granted me nine things which He has not granted to anyone before me other than the Prophet (saww):

1) The paths are opened for me.2) I have been taught the relations/races. 3) the clouds are set adrift for me.4) I know about the deaths and the calamities,5) (I have been granted) decisive speech,6) And certainly I gaze at the universe with Allah’s Permission, And is not hidden from me what was before Me and what is after me.7) And through my authority (Wilayat) Allah has perfected the religion of this nation8) And perfected His Blessings upon them9) And is satisfied with their religionAs He said on the Day of Wilayat (Ghadeer), ‘O Muhammad! Inform them that today I have perfected their religion and am satisfied with them with Islam as their religion., I have completed my Blessings for them.

All this is from the blessings of Allah (swt) upon Me and all praise is for Him.